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linux/arch/arm64
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Catalin Marinas a4fedc858d arm64: compat Fix siginfo_t -> compat_siginfo_t conversion on big endian 
commit 9d42d48a34 upstream.

The native (64-bit) sigval_t union contains sival_int (32-bit) and
sival_ptr (64-bit). When a compat application invokes a syscall that
takes a sigval_t value (as part of a larger structure, e.g.
compat_sys_mq_notify, compat_sys_timer_create), the compat_sigval_t
union is converted to the native sigval_t with sival_int overlapping
with either the least or the most significant half of sival_ptr,
depending on endianness. When the corresponding signal is delivered to a
compat application, on big endian the current (compat_uptr_t)sival_ptr
cast always returns 0 since sival_int corresponds to the top part of
sival_ptr. This patch fixes copy_siginfo_to_user32() so that sival_int
is copied to the compat_siginfo_t structure.

Reported-by: Bamvor Jian Zhang <bamvor.zhangjian@huawei.com>
Tested-by: Bamvor Jian Zhang <bamvor.zhangjian@huawei.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2015-03-06 14:53:03 -08:00
..
boot dtb: xgene: fix: Backward compatibility with older firmware 2014-11-04 17:08:42 -05:00
configs arm64: defconfig: update defconfig for 3.18 2014-11-05 17:07:58 +00:00
crypto crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:46 -08:00
include arm64: Add COMPAT_HWCAP_LPAE 2015-01-08 10:30:20 -08:00
kernel arm64: compat Fix siginfo_t -> compat_siginfo_t conversion on big endian 2015-03-06 14:53:03 -08:00
kvm arm64: KVM: Handle traps of ICC_SRE_EL1 as RAZ/WI 2014-11-26 14:40:43 +01:00
lib arm64: __clear_user: handle exceptions on strb 2014-11-13 15:21:26 +00:00
mm arm64: partially revert "ARM: 8167/1: extend the reserved memory for initrd to be page aligned" 2015-01-27 08:29:40 -08:00
net arm64: bpf: lift restriction on last instruction 2015-01-08 10:30:20 -08:00
xen arm: xen: implement multicall hypercall support. 2014-04-24 13:09:46 +01:00
Kconfig arm64: ASLR: Don't randomise text when randomise_va_space == 0 2014-10-24 15:47:49 +01:00
Kconfig.debug arm64: Add CONFIG_DEBUG_SET_MODULE_RONX support 2014-09-08 14:39:18 +01:00
Makefile Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-10-14 09:22:26 +02:00